Auxiliary lock



' Patented Nov. 29, 1921.

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AUXILIARY LOCK. APPLICATION'FILED JAN. 19. I921.

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ROBERT 1). rarnasoixr, or roar nonen, IOWA.

Specification of Letters Patent.

AUXILIARY LocK.

Patented Nov. 29, 1921.

Application filed. January 19, 1921. Serial No. 438,342.

To all whom it may con-cam: I

'Be it known that I, ROBERT D. PArnnsoN, a citizen of the United States of America, and resident of Fort Dodge, Webster county, Iowa, have invented a new and useful Auxiliary Look, of which the following is a specification. I

The object of this invention is to provide an auxiliary locking mechanism for vault and safe doors,adapted to prevent withdrawal of the ordinary boltwork in case the combination or dogging bar is destroyed or damaged.

A further object of this invention is to provide an auxiliary lockingmechanism for vault and safe doors, adapted to assume operative position in the event the regular locking mechanism is tampered with, and designed in such manner as to resist all of forts to release such auxiliary mechanism through application ofexternal force.

A further object of this invention is to provide an auxiliary locking mechan'ism'including a sectional locking lug mounted on the carrying bar and adapted to prevent withdrawal of the boltwork when the main lock is damaged byexternal force.

A further object of this invention is to provide means for preventing a false lock out through operation of the auxiliary lock when the main lock is not damaged and is in open position.

With these and other objects in View, my invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated by the accompanying drawing, in which- 1 Figure 1 is an inner face view, partly in section, showing a portion of a vault door with my auxiliary lock applied thereto, dotted lines indicating operative position of the mechanism. Fig. 2 is a. vertical section of the same. I s v In the constructionof the mechanism as shown the numeral 10 designates a vault or safe door, a portion only ofwhich is shown, which may be of any suitable'construction and dimensions. The door 10 is shown as equipped with an ordinary form of combination locking means, including a lock case or housing 11 mounted on its inner face, a knob 112 on its outer face by means of which the combination may be. operated, a handle means of which the bolts may bewithdrawn whenthe combination is released,

and a carrying bar 14 arranged vertically near the free margin of the door, spaced inwardly from the door, and carrying a plurality of bolts 15 adapted for engagement with the door frame to hold the door in closed position. The carrying bar 14: is moved laterally toward the free margin of the door, carrying with it the bolts 15, when the handle 13 is oscillated to effect the looking engagement. connected operatively to the lock mechanism in case 11 by means of a horizontally arranged dogging bar 16.

An auxiliary locking bar 17 is mount- The carrying bar 14 is ed against the inner face of the door 10,

the locking bar 17 and pivoted to the door by means of a screw or bolt 21, and said supporting bar is formed withan extension 22 projecting within and fitting rather snugly the recess 19 of the locking bar. A suspendingor connecting member 23, which may be of any suitable material, is fixed at one end to thesupporting bar 20, at a point between the ends thereof; that'is to say between the pivot 21 and extension 22. The connecting member 23 is extended upwardly alongside the inner face of the door 10 and passes over a roller 24 or the like carried by the door at a point behind the carrying bar 141; thence extends laterally alongside the dogging bar 16, extends across the lock housing 11 and is secured at its opposite end to the door as by meansof a screw 25. By this means the supporting bar is normally held in horizontal position, as shown full lines in Flg. 1, and in turn supports the auxiliary looking bar 17 in inoperative position.

A locking lug is fixed to and carried by the carrying bar 1e, and said lug preferably is formed in several sections so that the required number of such sections may be employed in a given instance to substantially occupythe space between said carrying bar and the door 10. In this instance three of such sections are illustrated and each is desigjnated by; the numeral 26. T56 ectional lug 26 secured to the face A supporting bar" 20 is mounted in the cut-away portion of of the carrying bar next to the door by means of a screw 27'and dowel 28, in a position such that the plane of its upper margin is substantially coincident with the horizontal plane of the lower margin-of the auxiliary locking bar 17. One margin of the lug 26 is concaved and is adapted to fit tical plane substantially coincident with the vertical plane of the convex face of the locking bar 17, and in the event the said locking bar is released from its inoperative position and permitted to drop and assume the position indicated by the dotted lines in Fig. 1. This engagement of the auxiliary locking bar witlf'the sectional lug takes .place when the connecting member 23 is ruptured or disconnected for any-reason,

" permitting the supporting bar 20 to drop 1 horizontal or inoperative position.

by gravity, oscillating on its pivot 21, and permitting the locking barto drop by gravity and engage said lug. Such engagement, it is obvious, prevents retraction of the carrying bar 14 and consequently holds the bolts 15 in their locking position irrespective of the condition of the regular locking mechanism in the housing 11, or the dogging bar 16. 7

Whenever the regular locking mechanism is tampered with by persons feloniously inclined, as by the use of explosives to. remove the combination, or by cutting through the wall of the door at or nearthe position of the combination, the lock housing llor the dogging bar 16, suchoperation will result in severing or rupturing the connecting member 23, and efiect a movement of .the auxiliary locking means tooperative' position. It is then impossible to withdraw the carrying bar and bolts, although the dogging bar may be severed or the entire mechanism in the lock case 11 destroyed, as the locking bar 17 stands in the path of the lug 26 which would have to he traveled to effect. such withdrawal.

That portion of the locking bar 17 overhanging the recess 19 and extension 22 is formed with a vertical 'hole or bore 29 ex tending entirely through it and containing a ball or slug 30 which normally rests on said extension. The extension 22 is formed near its free end with a hole or recess 31 adapted to form a continuation of the hole 29 when the parts have dropped to their operative position, at which time the slug 3O falls partially within said hole 31 and forms a lock between the parts 17' and 20, which effectively prevents their return to In its lower face the auxiliary locking bar 17 is formed with a notch 32 which is directly above the sectional lug 26 when the carrying bar 14 and boltwork are in unlocking position. In the event the connectmg member 23 is accidentally severed or disconnected at any time when the door 10 is unlocked, the locking bar 17 will fall by gravity as abovedescribed and the notch 32 will engage thesectional lug and prevent movement of the carrying bar and boltwork to operative or locked position. Thus a false lockout is prevented as the door cannot be locked until the break is repaired. V The supporting bar 20 and lock ng bar 17 preferably are composed of brass or other suitable fusible metal so that when This mechanism operates surely and effectively to insure automatic application of the auxiliary lock whenever the regular locking means is tampered with, damaged or destroyed. It operates through force of gravity and has no springs to become rusted or weakened by continued tension, so that it is always in condition for instant operation. I

I claim as my invention- V 1. An auxiliary locking mechanism for doors having laterally movable boltwork,

comprising alocking bar pivotally mounted on said door, a lug secured to said-boltwork and adapted to be engaged at times by the free end of said locking bar, a supporting bar pivotally mounted on said door independently of said locking bar and normally engaging and supporting said locking bar in inoperative position, and frangible means for holding said supporting bar in supporting position. v 3

2. An auxiliary locking mechanism for a door having a: laterally movable carrying bar spaced from its wall and bolts carried by said bar, comprising a locking bar pive otally mounted on said door between its wall and said carrying bar, a lug secured to said carrying bar between said bar and the wall of said door, said lug being formed in sec.- tions whereby a selected number-ofsuch sections may be employed to substantially fill the space between said carrying bar and door, a supporting bar. independently and pivotally mounted on said door and adapted to engage and support said lockingbar in inoperative position, said locking bar when released being adapted toi engage said lug and prevent reverse movement of said carrying bar, and a frangible member secured to and adapted to hold said supporting bar in supporting position.

3. An auxiliary locking mechanism for a door having laterally movable boltwork, comprising a locking bar pivotally mounted on said door, a lug on said boltwork adapted to be engaged at times by said locking bar to prevent reverse movement of said boltwork, a supporting bar pivotally mounted on said door and adapted to engage and support said locking bar in inoperative position, a frangible member secured to said supporting bar and normally holding it in supporting position, and means on said locking bar to engage said lug and prevent locking movement of said boltwork in the event said supporting bar is released when said boltwork is in unlocked position.

4. An auxiliary locking mechanism for a door having laterally movable boltwork, comprising a locking bar pivotallyvmounted on said door, a lug secured to said boltwork and adapted to be engaged at times by said locking bar to prevent reverse movement of said boltwork, said locking bar being formed with a longitudinal recess, a supporting bar separately and independently piv oted on said door and formed with a member projecting within said recess and normally holding said locking bar in inoperative position, and frangible means secured to and normally holding said supporting bar in supporting position. i

5. An auxiliary locking mechanism for a door having laterally movable boltwork,

comprising a locking bar pivotally mounted on said door, a lug secured to said boltwork and adapted to be engaged at times by said locking bar to prevent reverse movement of said boltwork, said locking bar being formed with a longitudinal recess, a supporting bar pivoted on said door and formed with a member projecting within said recess and vnormally holding said locking bar in inoperative position, a frangible member secured to said supporting bar and normally holding it in supporting 7 position, a hole being formed through the portion of said locking bar, above the recess therein, a hole being formed in said supporting bar in such posi-' tion as to be brought into register with the hole in said locking bar when theparts are moved to operative position, and a member in the hole of said locking bar adapted to partially enter the hole in the supporting bar at times and prevent reverse movement of said parts.

6. In an auxiliary locking mechanism, a locking bar pivoted at one end and formed with a cutaway portion above its pivot, said locking bar also being formed with a longitudinal recess communicating with said cutaway portion, and a supporting bar separately pivoted at one end situated in the cutaway portion of said locking bar and extending within the recess thereof, together with means for supporting the free end of said supporting bar.

7. An auxiliary locking mechanism, comprising a locking bar pivoted'at one end and formed with a cutaway portion above its pivot, said locking bar also being formed with a longitudinal recess communicating with said cutaway portion, a lug rigidly mounted and adapted to be engaged at times by the free end of said locking bar, a supporting bar independently pivoted at one end and occupying the cutawayportion of said locking bar and also extending within the recess thereof, and means for supporting the free end of said supporting bar, said locking bar being formed on its lower margin with a notch adapted at times to engage said lug.

Signed at Des Moines, in the county of "Polk and State of Iowa, this 28th day of December, 1920.

Y ROBERT D. PATERSON. 

